Due to the increasing complexity of hydrocarbon reserve structures and the increasing difficulty of geological exploration work, the tasks of increasing the accuracy and reliability of data on the properties of reservoir fluids used to calculate hydrocarbon reserves, develop design solutions, and perform technical and economic assessments of development efficiency, including the assessment of capital investments and operating costs during field development, are becoming increasingly important. The only way to obtain such information is by collecting representative samples of formation fluids. A sample is considered representative if its component composition is identical to that of the formation fluid. The optimal choice for collecting representative downhole formation fluid samples is the use of flow-through downhole samplers. An important factor in ensuring the operability of electronically controlled samplers is testing the functionality of the power supply elements during equipment preparation. Absolutely all power supply elements should be depassivated before they can be used. High-pressure gas sampling is performed during a stabilized well flow regime from a gas separator or from the gas line upstream of a critical flow prover (orifice meter). For the sampling, storage, and transportation of gas and gas condensate under pressure, shatter-proof metal-composite cylinders are used. These cylinders enable the reliable preservation of the collected fluid until laboratory analysis is conducted, provided that the requirements for transportation, operation, maintenance, and repair are met.
References
1. Ostroukhov N.S., Rassokhin A.S., Karnachev D.V., Domestic thief tubes (In Russ.), Vesti gazovoy nauki, 2016, no. 4, pp. 181–185.
2. OST 153-39.2-048-2003. Neft’. Tipovoe issledovanie plastovykh flyuidov i separirovannykh neftey. Ob»em issledovaniy i formy predstavleniya rezul’tatov (Oil. Standard Study of Reservoir Fluids and Separated Oils. Scope of Study and Results Presentation Forms.), Moscow, 2003, 94 p.
3. STO RMNTK 153-39.2-002-2003. Neft’. Otbor
